:** messages not adhering to RFC 822 message standards. E.g., Content type field is missing in the message header

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:** missing message id

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:** no start boundary

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:** The mail header character set value is not recognizable by Java Mail, E.g., iso-8859-1 Vs. iso 8859-1.

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+

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:* Insertion failures due to duplicate message id

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:** Compare the timestamp and server names in the delivery path (in the initial few lines of the header) with that of the mail in the DB. If they are exactly the same, this signifies that there is some problem with deletion of the E-Mail from the server. Deletion failure happens when there is a network failure while closing the mailbox folder.

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:** If they are different, it is a problem at the mail server level, and can be ignored.

:* Notification on skipped E-Mails can be configured to go to an intended recipient (see screenshot showing partition settings for Retriever), and the setting can also be configured to delete or retain (after marking the E-Mail as skipped) such E-Mails on POP3.